Ok, with the Samsung Impression, it will not allow me to receive texts if my SIM card is full, even if the phone is not. There are settings you can go into for messaging specifically, at the moment I have 398/500 text messages on my phone, and 24/30 on my SIM card (I recently deleted). However, when my SIM card gets to 30/30 and my phone has 400/500 messages available, the phone will not allow me to recieve messages until I delete those on the sim card, which makes it increasingly difficult to carry a conversation. Also, I have been advised to click on "More": Move message to phone, however, when I do this, the phone just vibrates, and says "SMS full". Help please!